Esperanza EH228K Bluetooth In-Ear Headphone TWS Black

Bluetooth: Yes | Ear coupling: Intraaural | Weight: 90 g | User guide: Yes | Product type: Wireless headphones | Battery capacity: 300 mAh | Battery capacity: 30 mAh | Battery type: Built-in battery | Product colour: Black | Headphone frequency: 20 - 20000 Hz | Control type: Touch | Battery technology: Lithium polymer (LiPo 4S) | Frame material: Plastic | Cables included: Charging cable | Bluetooth version: 5.0 | Number of batteries supported: 1 | Talk time: 4 h | Bluetooth profiles: A2DP, AVRCP, HFP, HSP | Connectivity technology: Wireless | Recommended usage: Travel/recreation | Battery voltage: 5 V | Volume control: Yes | Volume control: Yes | Battery operated: Yes | USB cable length: 0.2 m | Maximum operating distance: 10 m | Transmitter frequency: 2.4 GHz | USB connectivity: Yes | Continuous audio playback time: 3 h | Wearing style: In-ear